Phase 1: Add ESLint/Prettier config + baseline auto-fixes

dashcaddy-api/.eslintrc.js

@@ -0,0 +1,56 @@
+module.exports = {
+  env: {
+    node: true,
+    es2021: true,
+    jest: true,
+  },
+  extends: 'eslint:recommended',
+  parserOptions: {
+    ecmaVersion: 2021,
+  },
+  rules: {
+    // Possible errors
+    'no-await-in-loop': 'warn',
+    'no-console': 'off', // We use console in server code
+    'no-template-curly-in-string': 'error',
+    
+    // Best practices
+    'curly': ['error', 'multi-line'],
+    'eqeqeq': ['error', 'always', { null: 'ignore' }],
+    'no-eval': 'error',
+    'no-implied-eval': 'error',
+    'no-return-await': 'error',
+    'no-throw-literal': 'error',
+    'prefer-promise-reject-errors': 'error',
+    'require-await': 'warn',
+    
+    // Variables
+    'no-unused-vars': ['error', { 
+      argsIgnorePattern: '^_',
+      varsIgnorePattern: '^_',
+    }],
+    'no-use-before-define': ['error', { 
+      functions: false,
+      classes: true,
+    }],
+    
+    // Stylistic
+    'comma-dangle': ['error', 'always-multiline'],
+    'quotes': ['error', 'single', { avoidEscape: true }],
+    'semi': ['error', 'always'],
+    'indent': ['error', 2, { SwitchCase: 1 }],
+    'max-len': ['warn', { 
+      code: 120,
+      ignoreUrls: true,
+      ignoreStrings: true,
+      ignoreTemplateLiterals: true,
+    }],
+    
+    // ES6
+    'arrow-spacing': 'error',
+    'no-var': 'error',
+    'prefer-const': 'error',
+    'prefer-arrow-callback': 'warn',
+    'prefer-template': 'warn',
+  },
+};